.c-mask {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100vw;
    height: 100vh;
    backdrop-filter: blur(9.19px);
    background-color: rgba(0, 0, 0, 0.5);
}